joe biden has done over 18 debates, which he eventually lost to sara sarah palin. waoes had a lot of experience. i think the conventional wisdom on him he has to watch it. he can't do any gaffes. they give joe biden a pass sometimes when he goes off the rails because he has a good ability to speak directly to the american people. he's not too high brow, he's not too wonky. bill: the able difference will be a an astounding thing this watch. 38 years separate the stew candidates. this format is different. they are sitting down. >> team obama want h wanted them to be standing. they wanted all the debates to have the candidates at top of the ticket or second in command to be sitting. i think they think it lead to better dialogue and they got wear that i tonight. weee see that as the two men spar. as for the age difference it is remarkable. they throw out stats in advance of this thing. vice president joe biden, then joe biden had graduated from college, finished law school, got even married at the moment paul ryan was being born. this is a remarkable difference between